With the development of the times, electronic signatures are becoming more and more popular. The difference between electronic signature and electronic signature. The use of electronic signature documents requires the prior consent of all parties concerned. The Electronic Signature Law stipulates: "In civil activities, the parties may agree to use or not use electronic signatures and data messages." Electronic signature document can be regarded as a form of data message. It is customary to use handwritten signature documents without the prior consent of the parties. Second, the difference in the scope of application The scope of application of electronic signature documents is not as wide as that of handwritten signature documents, and it can not be applied to personal relationships involving marriage, adoption and inheritance at present; Does not involve the transfer of real estate rights such as land and houses; Does not involve stopping water supply, heating, gas supply, power supply and other public utility services; And other circumstances in which electronic documents are not applicable as stipulated by laws and administrative regulations. Third, the difference in signing methods Signing a digital signature on an electronic file means encrypting the message digest data of the electronic file and its stored electronic file with a private key. Among them, the encryption algorithm generally adopts RSA algorithm or DSA algorithm; The algorithm for checking message digest generally adopts MD5 algorithm or SHA- 1 algorithm. You can sign a digital signature on a text-based electronic file (or email, software). Handwritten signatures make signatures written on various paper documents have obvious personality characteristics. Fourth, the difference in appearance The appearance of digital signature can be divided into: implicit (the appearance of digital signature has no visible marks such as words and graphics, that is, the digital signature is invisible); Type of characters (the appearance of digital signature is a set of general font characters without individual characteristics, such as regular script, official script, etc. ); Graphic/image type (the appearance of digital signature is a graphic or seal image composed of handwritten signature words with individual characteristics). From the appearance form, the digital signature of graphics/images is closer to people's handwritten signature or seal, so it is easier to be accepted by people. The appearance of handwritten signature is a handwritten character with personal characteristics. V. Difference of verification On the data to be verified, digital signature verification data refers to data used to verify the authenticity of digital signatures, including codes, passwords, algorithms or public keys, which are usually stored in digital certificates. In handwritten signature, handwriting is a comprehensive reflection of the writer's own physiological characteristics and acquired practice, which is called "words are like people". Based on the inherent characteristics of handwriting, handwritten signature has become one of the common means for people to identify themselves. 6. What is the difference between the validity period of the law? Digital certificates are only valid for a specified period of time. When the digital certificate expires, you must apply for a new digital certificate. Can I use the same key? Renew the certificate, or you can renew the certificate with a new key. If the time stamp of the digital signature file is within the validity period of the digital certificate and the digital signature is true, the file has legal effect; Otherwise, the document has no legal effect. The legal effect of handwritten signature documents is stipulated by relevant laws.

Legal objectivity:

An electronic signature is defined as any letter, alphanumeric or other symbol that is digitally or logically associated with an electronic record, and the electronic signature is executed or adopted to prove or approve the electronic record. A digital signature is defined as an electronic signature that uses an asymmetric encryption system and an encryption function to transform an electronic record, so that anyone who holds both the original untransformed electronic record and the signer's public key can accurately judge: (1) whether to use a private key matching the signer's public key for transformation; (2) Whether the original electronic record has changed after conversion. As can be seen from the above provisions, digital signature is a kind of electronic signature. The definition of electronic signature in Singapore's Electronic Transactions Law does not specify what method and technology should be adopted, but only requires that the method or technology should be related to electronic records and aimed at proving or approving electronic records. The definition of digital signature clearly stipulates which technology to adopt, namely asymmetric system and hash function. Digital signature is realized by encrypting and decrypting data through cryptographic algorithm. The characteristic of digital signature is that it represents the characteristics of documents. If the file changes, the value of the digital signature will change accordingly; Different files have different digital signatures. In the process of transmission, if a third person tampers with the file, but he does not know the sender's private key, then the decrypted digital signature must be different from the calculated digital signature. This provides a safe way to confirm the identity of the sender. If the production data has been or may have been compromised, the relevant parties have not been informed in time, the production data with electronic signature has been stopped, the true, complete and accurate information has not been provided to the electronic certification service provider, or there are other faults, thus causing losses to the relying party of electronic signature and the electronic certification service provider, it shall be liable for compensation.